Kwiksen 2pcs Oxygen O2 Sensor 234-4153 234-4162 Upstream&Downstream For Toyota Tacoma 4Runner Direct Plug-In Replacement Cross Reference Part Number: 234-4153, 234-4162 Position: Please check compatibility in Description Warranty: One Year Unlimited Miles This is Brand New High Quality Aftermarket Product. Meet the professional specification as OEM parts, for stable performance durable service.